Steve Ballmer owns 4 percent stake in Twitter : Bloomberg

(Reuters) - Former Microsoft Corp Chief Executive Steve Ballmer owns a 4 percent stake in Twitter Inc , Bloomberg reported, citing an email from him. A Twitter account with the handle @Steven_Ballmer tweeted on Friday that Ballmer had bought the stake over the past few months. Ballmer's stake is worth a little more than $800 million as of Twitter's stock close of $29.71 on Thursday.